Ada Programming/Keywords/interface

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This language feature is only available from Ada 2005 on.

Used to declare an interface. Interfaces are the most important innovation in Ada 2005. The basic semantic has been taken from the interface concept of the Java programming language. Interface inheritance is a reduced form of multiple inheritance.

Interface types[edit]

There are various forms of interfaces available:

Normal interface[edit]

The normal interface is declared as:

  type Printable  is  interface;

Limited interface[edit]

Can be used as interface to limited tagged type.

  type Printable  is  limited  interface;

Synchronized interface[edit]

 type Printable  is  synchronized  interface;

All synchronized interfaces are also limited.

Task interface[edit]

Can be used as an interface to a task type.

 type Printable  is  task  interface;

All task interfaces are also synchronized.

Protected interface[edit]

Can be used as an interface to a protected type.

  type Printable  is  protected  interface;

All protected interfaces are also synchronized.

See also[edit]


Ada Reference Manual[edit]

Ada 2005[edit]

Ada Quality and Style Guide[edit]

Ada Keywords
abort else new return
abs elsif not reverse
abstract (Ada 95) end null
accept entry select
access exception of separate
aliased (Ada 95) exit or some (Ada 2012)
all others subtype
and for out synchronized (Ada 2005)
array function overriding (Ada 2005)
at tagged (Ada 95)
generic package task
begin goto pragma terminate
body private then
if procedure type
case in protected (Ada 95)
constant interface (Ada 2005) until (Ada 95)
is raise use
declare range
delay limited record when
delta loop rem while
digits renames with
do mod requeue (Ada 95) xor